HS series
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HS series freezers at -85 °C The HS (High Security) series constitutes KW’s standard freezer line at -85°C; the PL (Premium Line) series represents excellence in verylow-temperature freezers for laboratory use. The HSL (High Security Light) series constitutes KW’s standard freezer line at -45°C; the PLL (Premium Line Light) series represents excellence in low-temperature freezers for laboratory use. The difference between both lines is in the control system and some components that, in the PL and PLL versions, drive equipment reliability even higher, and thus the security of the products...

HS series freezers at -85 °C -Models with very high capacity (500-600-700 litres) have new available solutions to bypass, during the pull down startup stage, the overheated steam from the 2nd stage to eliminate peaks by the compressor’s electric motor and reduce the resulting thermomechanical stress. The device, called SPED (Startup Pressure Equalisation Device), is installed upon request and increases the warranty on the compressor to 5 years. -Models HS and HSL offer lock with transponder/badge; the PK (Personal Key) device comes complete with badge reader, management electronics,...

HS series freezers at -85 °C Self-diagnosis test: upon boot up, the freezer’s LEDs and buzzer are activated for about 1”. User Menu access protected by password. Password-protected Setup access menu for service operations. Cooling Startup/Shutdown The startup and shutdown of the cooling cycle requires passwordprotected manoeuvres: the cycle starts from a standby status (lower display showing OFF). First the “START” key is pressed, then the display shows a password request; if correctly inserted, the cooling cycle will start, otherwise the display will show OFF again. The same procedure is...

HS series freezers at -85 °C Summary of technical characteristics: STRUCTURE: Internal casing in AISI 304 stainless steel (or AISI 316 upon request) with rounded angles for easy cleaning; the external cabinet is a plasticised, zinc-plated (or enamelled) steel sheet with rounded edges for maximum ergonomics; insulation is in CFC- and HCFC-free polyurethane resin foamed on site, with a density of 40 Kg./m3 and with an average thickness of 140 mm or more; the door is mounted on hinges with ABS covering (self-balancing for horizontal models); internal counter doors: for vertical machines, using...

HS series freezers at -85 °C Model Max. external measurements (WXDXH) in cm Internal measurements (WXDXH) in cm Average power consumed in Kw

HS series freezers at -85 °C Example of consumption measurements for the K568_K58PL_HS freezer In terms of power, at -80 °C in an environment of about +25 °C, the equipment absorbs approximately 1.1 kW (when ON). For more accuracy an increase in the recorded ON/OFF is reported. In this graph the ON time is about 16 minutes, whereas the OFF time is about 10 minutes at - 80 °C. The mean consumption measured is approximately 610 W at the aforementioned conditions. Loss of the K568_K58 PL freezer The loss is approximately 2,000 BTU/h in standard environmental conditions.

STARTUP and BLACKOUT tests Load conditions: VACUUM K58PLA VUOTO - START UP da temperature ambiente - porta chiusa- tempo (minuti primi) Misura della risalita della temperatura per da -80jC a porta chiusa TEMPO (minuti primi)

Model Max. external measurements Internal measurements No. Internal compartment Capacity Average power Weight _(WXDXH) in cm (*)_(WXDXH) in cm_compartments measurements in cm in litres consumed in Kw in Kg (*) Regarding depth,+16 footprint requires condensing vents (excluding K568 HS, K57 HS and K66 HSV.I.P.) V.S.P. Vacum Insulation Panel The lower value Is guaranteed with room T= +32 X. Beyond +35 X, it is advisable to use the automatic condensation device using water from the utility (see ACCESSORIES).

HS double-door vertical freezers Model Max. external measurements (*) Internal measurements No. Internal compartment Capacity in Average power Peso (WXDXH) in cm (Ixhxw) in cm compartments measurements in cm litres consumed in Kw in Kg (*) Regarding depth, +16 footprint requires condensing vents The lower value is guaranteed with room T= +32 °C Beyond +35 °C, it is advisable to use the automatic condensation device using water from the utility (see ACCESSORIES).

HS series - Accessories freezer containers and accessories ACCESSORIES: (available - upon request - for all models) • 4,000 VA voltage regulator to stabilise (high or low) utility power to optimum values for the compressors • Remote alarm devices • Disk recorder with weekly cycle and battery power • Strip-chart electronic recorder with one or more traces • CO2 backup system with 24 VAC / 50 Hz power supply complete with connection and flexible hose • LN2 backup system with 24 VAC / 50 Hz power supply complete with connection, flexible hose and security valve (absolute value 2.7 bar) • CO2...

HS series - Accessories freezer containers and accessories LN2 (24 VAC) emergency system Cryogenic gloves Flexible hose

HS-PL series details Ergonomic handle with key (vert. freezer) Handle with key (horiz. freezer) Door alarm switch (horiz. freezer) Door hinge (vert. freezer) Door alarm switch (vert. freezer) Door hinge (horiz. freezer) Remote alarm (vert./horiz. freezer)

HS-PL series details door with rounded edges (vert. freezer) triple seal (vert. freezer) internal tank (horiz. freezer) insulated internal counter door (vert. freezer) triple seal (horiz. freezer) compensation valve (cong. vert./oriz.)

HSL series freezers at -40 °C The K40…….HSL line represents the -45 °C / -50 °C version of the HS at -85°C The freezers include: • Construction characteristics that are the same as those of the HS series at -85°C, with the exception of the second system in cascade • High reliability by the machine, with a new (CFC- and HCFC-free) refrigerating circuit design using specific components for low temperatures (up to -50 °C), a truly innovative fluid (compatible with low-viscosity P. O. E. oil), that allows very low evaporation temperatures even in critical environmental conditions with T > +35...